package com.zzxy.spring12.aspect;

import com.zzxy.spring12.service.ITeacherService;
import com.zzxy.spring12.service.impl.TeacherServiceImpl;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class MyBeanFactory {
    public static ITeacherService createTeacherService(){
       //1.target class
        TeacherServiceImpl teacherService = new TeacherServiceImpl();
        //2.advice
        MyAspect aspect = new MyAspect();
        //3.waving
        ITeacherService proxyInstance = (ITeacherService) Proxy.newProxyInstance(MyBeanFactory.class.getClassLoader(), teacherService.getClass().getInterfaces(), new InvocationHandler() {
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                aspect.before();
                Object obj = method.invoke(teacherService, args);
                aspect.after();
                return obj;
            }
        });
        return  proxyInstance;

    }
}
